[5.10]
The angle subtended by a luminaire at an irradiated surface.
This term is obsolete.
NOTE: This definition was changed in ANSI/IES RP-16-17 Addendum 4.
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[5.10]
The angle subtended by a luminaire at an irradiated surface.
This term is obsolete.
NOTE: This definition was changed in ANSI/IES RP-16-17 Addendum 4.
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